MudBlazor v6.3.1

Note: this is a hotfix release mitigating an accidental breaking change in MudAppBar which could have broken your app's layout.

What's Changed

Other Changes

• MudDataGrid: Remove unused UnitTests.Viewer by @ScarletKuro in #6928
• MudAppBar: Fix default value of WrapContent (#6808, #6869) by @henon in #6929

Full Changelog: 6.3.0...v6.3.1